Tagged: metals

Year 8 Science – Elements and Compunds

Froth flotation

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This term we have been studying the elements of the periodic table, comparing elements and their compounds and discovering the properties of metals and non-metals. Find out more about the elements at the Interactive Periodic Table. This site, The Periodic Table of Videos, has videos with experiments and information about most of the naturally occuring 92 elements. The Minerals Council of Australia have some excellent resources to help our learning about the earth’s minerals, including “Oresome Froth” (how metals are extracted from their ores) and “Metals Matter” (use a virtual metal detector to discover the metal composition of everyday household objects). While I am on the Year 6/7 camp at Roses Gap this week you can explore the above sites and revise for the test which will be on March 12th.

After the earthquake off the coast 0f Chile this weekend, you may be interested in this animation from the BBC which shows how eathquakes cause tsunamis.

Chemical Reaction or Physical Change?

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Henry asked an interesting question today – Is welding a physical change or a chemical reaction? To find out we need to think about the following questions:

  • Can the change be easily reversed?
  • Are there new products formed?
  • Is there a change in colour?
  • Are there any gases or precipitates formed?

You can read more about the science of welding here.

Some welding videos here.